Geometric dimensioning and tolerancing (GD&T) workbench

Build the FCF. Check its structure. Understand its meaning.

Interpret an existing feature control frame, develop a candidate from design intent, and learn the ASME Y14.5-2018 concepts behind both. In Interpret, deterministic rules establish callout structure before AI explains the result.

Built for engineering review. DatumPilot does not replace ASME Y14.5, qualified engineering judgment, drawing-owner decisions, or inspection planning.

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Free plan · no credit card · commercial use included.

Reference chart of ASME Y14.5 geometric dimensioning and tolerancing symbols, including straightness, flatness, circularity, cylindricity, profile, angularity, perpendicularity, parallelism, position, concentricity, symmetry, and runout.
  • Grounded in ASME Y14.5-2018
  • Interpret: deterministic checks before AI
  • Technical and plain-language output
  • Confidence, warnings, and clause references

Workspace

Interpret, Recommend, and Learn in one workspace

Each mode uses the same ASME Y14.5-2018 context for a different engineering task.

Interpret

Build feature control frames (FCFs), including composite and multi-segment controls. Get a plain-language and technical interpretation with inspection implications, confidence, warnings, and applicable ASME Y14.5-2018 references.

Interpret a callout

Recommend

Define the feature, functional requirement, datum strategy, and output target. DatumPilot proposes a candidate FCF and alternatives to consider, then explains the control strategy, datum logic, material condition, and MBD/PMI guidance for engineering review.

Recommend a callout

Learn

Learning Mode includes 12 modules and 55 lessons backed by a 794-concept reference library. Reinforce the standard with worked examples, scored knowledge checks, “Build it” practice, concept browsing, mastery tracking, and spaced review.

Start learning

How it works

Deterministic checks before AI explanation

The workflow separates callout facts from generated explanation.

Constrain the frame

Build feature control frames, including composite and multi-segment controls, in a guided editor that checks the control, tolerances, modifiers, and datum references before interpretation.

Establish callout facts

A deterministic rules engine establishes the callout structure and checks key facts before any AI-generated explanation is accepted.

Explain with traceability

Read the result in plain language and engineering terms, with inspection implications, confidence, warnings, missing context, and applicable clause references.

Pricing

Choose capacity, learning access, and report output

Start on Free. Move to Individual for higher monthly limits. Choose Pro for the complete learning track, highest limits, and PDF interpretation reports. Interpret and Recommend share one monthly allowance; copyable reports are included on every plan. Paid plans use Stripe Checkout after sign-in.

Free

Try the whole platform

$0forever

No credit card required

Get started free
  • 10 interpretations / month
  • 3 saved reports
  • Copy report
  • Foundation learning modules
  • Commercial use included

Individual

Best for regular use

$15/ month

billed monthly

Choose Individual
  • Foundation learning modules
  • 75 interpretations / month
  • 25 saved reports
  • Copy report
  • No PDF export

Pro

Best for professionals

$39/ month

billed monthly

Go Pro
  • Full learning track — all 12 modules
  • 300 interpretations / month
  • 250 saved reports
  • PDF interpretation reports

Engineering support with an explicit boundary

DatumPilot supports single-callout interpretation, candidate recommendations, and learning. It does not replace ASME Y14.5, qualified engineering judgment, drawing-owner decisions, or inspection planning. Verify the result against the full drawing, applicable standards, and your organization's review process.

Applicable ASME Y14.5 references, confidence, warnings, and unresolved contextAccessible by design — WCAG 2.2 AA, light and dark, usable to a 320px viewportExport or delete your data; paid checkout through Stripe

Start with one feature control frame. See the reasoning.

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